Iron pile



E. BECKER March 24, 1936.

4 IRON PILE Filed June 8, 1935 C 1w n v/ l l l l l l A l /f l l f. www i l l n l A f l l y l ngz "Muff:

ELL,

Patented Mar. A24, 1936 UNITED" STATES moNrlm:V

Enno Becker, Bremen, Germany,

vereinigte stamwerxe mmm? seldorf, Germany Application June s, lass, sei-m No. 674,943

In Germany June 11,1932

l Claims.

' According to the improvement forming the subject of the present invention not only that part of the ple which is arranged in the level of the ground having carrying capacity, but also that part of the pile lying above thereof in the layers of the ground which have a less carrying capacity, is provided with a thickening.

Said upper thickening may be of the same or of greater dimensions yet lower strength than the lower thickened portion. The upper thickened portion can have less strength for the reason that the-upper strata above the stable ground are not so compact as the lower layers. The length or height -of the upper thickening is optional. For instance, it can extend above the oor or it may alternatively terminate under the oor.

The upper thickening may consist for instance of light concrete with or without reinforcement or another suitable material. If the upper thickening has greater dimensions than the4 lower thickenedportion, the part of the upper thickened portion projecting beyond the lower one should be su'tably protected while the pile is driven in. Said protection can easily be obtained by extending the iron skin of the lower thickened portion in accordance with the dimensions of the upper thickening of the pile.

This type of pile with upper thickening has the advantage to increase the reliability and bearing capacity of the pile to a considerable extent for the reason that hollow spaces in the upper port'on of the pile, in so far as they are harmful, are eliminated and this portion can thus take up also the share of frictional force of the top strata. Moreover, the upper thickening of the pile prevents expansion of the stable ground compressed by the lower thickening, as the hollow spaces in the upper pile portion have been closed by the concrete. If the upper thickening is larger than the lower one the ground is moreover compressed while the pile is driven in, so that a further increasing of the bearing strength is obtained.

55 The utilization of concrete for the upper pile (ci. sig-53) l thickening has moreover the advantage to give a protection for the surface of the pile covered `with concrete against corroding. It is furthermore possible to make alike the moments of inertia ofthe pile with respect to the two main 5 axis thereof. y

By way of example, the invention is illustrated in the accompanying drawing.

Figure 1 is a longitudinal section of av pile according to the invention. 10

Fig. 2 is a. horizontal s ection of the pile on the line I-I.

Fig. 3 is a longitudinal section oi a modiiled embodimentof the pile.

Fig. 4 is a cross-sectional view according to the lines II-II of Fig. 3.

In the gures a represents the iron pile of I-shaped cross section, b the lower thickening and c the upper thickening. According to Fig. l the upper thickening is larger than the lower one and it is protected at its bevelled middle portion bythe element e of theiron .skin f of the lower thickening. d are the iron insertions or rei-nforcing members for the concrete of the thickening. According to Fig. 3 the upper thickening has the same dimensions as the lower thickening, but the iron insertions in the concrete have been omitted. In both cases the upper thickening extends to the ground.

The lower thickening b as illustrated on the drawing, comprises a portion of the I-pile proper, sheet metal being secured, e. g. by welding, in place between the flanges of the I-pile ancl concrete being lled in the spaces or pockets formed by the sheet metalv on the pile.

What I claim and desire to secure byLetters Patent in the United States is:

1. Iron pile intended to be rammed and possessing an I-shaped cross-section comprising a web portion and two anges having a plurality of concrete thickenings arranged between the flanges at both sides of the web portions, the lower one being arranged at such a distance from the lower end of the pile that in that part of the pile lying underneath said lower thickening long grooves are formed which are open at their underside and closed at their upper side by the said thickening, said grooves being arrangedl in such a manner that the ground is iirmly pressed into it upon the ramming in of the pile and is retained therein by the said thickening, whereas each of the remaining thickenings immediately follows upon the lower one.

2. Iron pile intended to be rammed and possessing an I-shaped cross-section comprising a web-like portion and two anges comprising two thickenings consisting of concrete and arranged between said flanges at both sides of said weblike portion and the lower one of said thickenings being arranged at such a distance from the lower end of the lpile that in that part vof the pile lying undern/eath said lower thickening long grooves are formed which are open at their underside and closed at their upper side by the said thickening, said grooves being arranged in such a manner that the ground is nrmly pressed into it upon the ramming in of the pile and is retained therein by the said thickening, whereas the upper thickening is of larger extension than the lower. one and immediately follows upon the latter, and comprising sheet iron parts in the form of a pocket arranged at the pile to embrace the outer surfaces of the lower thickening, and reinforcing iron insertions lembedded into the upper concrete thickening.

3. Iron pile intended to be rammed and possessing an I-shaped cross-section comprising a web-like portion and two flanges comprising a thickening consisting of concrete and provided with sheet iron partsat its lower part, said thickening comprising two parts arranged at both sides of the web-like portion between the flanges and at such a distance from the lower end of the pile that in that part of the pile lying underneath said thickening long grooves are formed which are open at their underside and closed at their upper side b'y the said thickening, said grooves being arranged in such a manner that the ground is rmly pressed into it upon the ramming in of the pile and is rel tained therein by the said thickening, whereas the said sheet iron parts are arranged at the .pile in such a manner as to embrace the lower part of the concrete thickening in the form of'a pocket.

4. A pile comprising an elongated iron member having an I-shaped cross-section and composed of a web portion and two iianges and concrete thickenings interposed between the anges of the iron member adjacent the lower end thereof.

5. A pile comprising an iron member having an I-shaped cross-section and composed of a. web portion and two flanges and an iron skin disposed within the-anges adjacent the lower end of the member and filled with concrete.

6. A pile comprising an iron member having an I-shaped cross-section and composed of a web portion and two flanges and metallic members secured within the flanges adjacent the lower end of the member and extending beyond the outer edges of the flanges and defining upwardly open pockets, said pockets being lled with concrete.

7. A pile comprising an iron member having an I-shaped cross-section and composed of a web portion and two anges and metallic members securing within the flanges adjacent the lower end of the member and defining upwardly open pockets, said pockets being filled with concrete.

8. A pile comprising an iron member having an I-shaped cross-section and composed of a web portion and two flanges and metallic members secured within the flanges adjacent the lower end of the member, said metallic members being fast to the web at their bottoms but spaced from the web at their tops thus forming upwardly open pockets, said lpockets being filled with concrete.

9. A pile comprising an iron member having an I-shaped cross-section and composed of a web portion and two flanges and metallic members secured within the flanges adjacent the lowerv end of the member, said metallic members being from the web at their tops and outwardly flared thus forming upwardly open pockets, said pockets being iilled with concrete.

10. A pile comprising an iron member having an I-shaped cross-section and composed of a web portion and two anges and metallic members secured within the flanges adjacent the lower end of the member, saidmetallic members being fast 'to the web at their bottoms but spaced from the web at their tops, and the space between the metallic members and the web being lled with concrete.

11. A pile comprising an iron member having an I-shaped cross-section and composed of a web portion and two flanges and metallic members secured within the flanges adjacent the lower end of the member, said metallic members being fast to the web at their bottoms but spaced from the web at their tops and outwardly flared, the space between the metallic members and the web being illled with concrete and the space between the flanges above the metallic members being filled with concrete extending to the outer edge of the ilared portions of the metallic members.

- l2. A pile comprising an iron member having an I-shaped cross-section and composed of a web portion and two anges and metallic members secured within the flanges adjacent the lower end of the member, said metallic members being fast to the web at their bottoms but spaced from the web at their tops and outwardly flared, the space between the metallic members and the web being lled with concrete and the space between the flanges above the metallic members being lled with reinforced concrete extending to the outer edge of the flared-portions of the metallic members.

13. A pile comprising anviron member having an I-shaped cross-section and composed of a web portion and two flanges and an iron skin disposed within the flanges adjacent the lower end of the member and lled with concrete, said iron skin being outwardly anged at its top and the space between the iangesof the iron member above the iron skin being lled with concrete extending past the flanges of the iron member to the outer edge of the ange of the iron skin.

14. A pile comprising an elongated iron member composed of a web and two flanges, a concrete thickening interposed between the flanges of the iron member adjacent to the lower end thereof and a second concrete thickening above and of greater thickness than the first mentioned thickening.

15. A pile comprising an elongated iron member composed of a web and two flanges, a c oncrete thickening interposed between the flanges of the iron member adjacent to the lower end fast to the web at their bottoms but spaced thereof and a second reinforced concrete thick- A 

